- 02 Mar, 2015 14 commits
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Prashant Laddha authored
FM (frequency modulated) signal for SDR is generated by varying the phase, where phase variation is proportional to input signal. It is seen that, the larger phase increments leads to discontinuities in the signal recovered after demodulation. Reducing the extent of phase variation with respect to input signal, equivalent to reducing the modulation index. Tested using FM receiver flow graph in gnuradio-companion. Cc: Antti Palosaari <crope@iki.fi> Signed-off-by:
Prashant Laddha <prladdha@cisco.com> Signed-off-by:
Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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Prashant Laddha authored
The common implementation for sin/cos in include/linux/fixp-arith.h has been improved recently to provide higher precision. Replacing native implementation of sin/cos in vivid sdr with common implementation. This serves two purposes: 1. Improved accuracy: the native implementation based on the Taylor series is more prone to rounding errors. 2. Reuse of common function: this is better compared to maintaining native versions for each driver. Suggested by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Cc: Antti Palosaari <crope@iki.fi> Signed-off-by:
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Mauro Carvalho Chehab authored
The cos table used at fixp-arith.h has only 8 bits of precision. That causes problems if it is reused on other drivers. As some media drivers require a higher precision sin/cos implementation, replace the current implementation by one that will provide 32 bits precision. The values generated by the new implementation matches the 32 bit precision of glibc's sin for an angle measured in integer degrees. It also provides support for fractional angles via linear interpolation. On experimental calculus, when used a table with a 0.001 degree angle, the maximum error for sin is 0.000038, which is likely good enough for practical purposes. There are some logic there that seems to be specific to the usage inside ff-memless.c. Move those logic to there, as they're not needed elsewhere. Cc: Hans de Goede <hdegoede@redhat.com> Signed-off-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by:
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Christian Engelmayer authored
In case allocation vb2_dma_sg_init_ctx() fails during cx8802_probe(), the already allocated cx8802 device structure memory is not freed in the used exit path. Thus adapt the cleanup handling accordingly. Detected by Coverity CID 1260065. Signed-off-by:
Christian Engelmayer <cengelma@gmx.at> Signed-off-by:
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Alexey Khoroshilov authored
Memory allocated for sh_vou_file is not deallocated on error paths in sh_vou_open(). Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by:
Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by:
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Hans Verkuil authored
<tgroup> doesn't understand the 'border' attribute. Signed-off-by:
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Kiran Padwal authored
This patch uses managed resource APIs to allocate memory in order to simplify the driver unload or failure cases Signed-off-by:
Kiran Padwal <kiran.padwal@smartplayin.com> Signed-off-by:
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Geert Uytterhoeven authored
If NO_DMA=y: warning: (VIDEO_OMAP2_VOUT && VIDEO_VIU && VIDEO_TIMBERDALE) selects VIDEOBUF_DMA_CONTIG which has unmet direct dependencies (MEDIA_SUPPORT && HAS_DMA) drivers/built-in.o: In function `__videobuf_dc_free': videobuf-dma-contig.c:(.text+0x6f4d32): undefined reference to `dma_free_coherent' drivers/built-in.o: In function `__videobuf_dc_alloc': videobuf-dma-contig.c:(.text+0x6f4fe6): undefined reference to `dma_alloc_coherent' drivers/built-in.o: In function `__videobuf_mmap_mapper': videobuf-dma-contig.c:(.text+0x6f518e): undefined reference to `dma_free_coherent' Commit 24482922 ("[media] timberdale: do not select TIMB_DMA") dropped the dependency of VIDEO_TIMBERDALE on DMADEVICES, and thus the implicit dependency on HAS_DMA. VIDEO_TIMBERDALE selects VIDEOBUF_DMA_CONTIG, which bypasses its dependency on HAS_DMA. Make VIDEO_TIMBERDALE depend on HAS_DMA to fix this. Signed-off-by:Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
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Geert Uytterhoeven authored
If NO_DMA=y: warning: (VIDEO_AM437X_VPFE && VIDEO_DM365_VPFE && VIDEO_DT3155 && VIDEO_OMAP4) selects VIDEOBUF2_DMA_CONTIG which has unmet direct dependencies (MEDIA_SUPPORT && HAS_DMA) drivers/media/v4l2-core/videobuf2-dma-contig.c: In function ‘vb2_dc_mmap’: drivers/media/v4l2-core/videobuf2-dma-contig.c:207: error: implicit declaration of function ‘dma_mmap_coherent’ drivers/media/v4l2-core/videobuf2-dma-contig.c: In function ‘vb2_dc_get_base_sgt’: drivers/media/v4l2-core/videobuf2-dma-contig.c:390: error: implicit declaration of function ‘dma_get_sgtable’ VIDEO_AM437X_VPFE selects VIDEOBUF2_DMA_CONTIG, which bypasses its dependency on HAS_DMA. Make VIDEO_AM437X_VPFE depend on HAS_DMA to fix this. Signed-off-by:Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by:
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Nicholas Mc Guire authored
The if and the else code are identical - so the condition has no effect on the effective code. This patch removes the condition and the duplicated code. Signed-off-by:
Nicholas Mc Guire <hofrat@osadl.org> Signed-off-by:
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Mauro Carvalho Chehab authored
If the media controller (MC) is not enabled, it will compile fine, but will fail at the linkedition: ERROR: "media_device_unregister" [drivers/media/usb/siano/smsusb.ko] undefined! Reported-by:
kbuild test robot <fengguang.wu@intel.com> Signed-off-by:
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Mauro Carvalho Chehab authored
This is really a simple function, but using it avoids to have if's inside the drivers. Also, the kABI becomes a little more clearer. This shouldn't generate any overhead, and the type check will happen when compiling with MC DVB enabled. So, let's do it. Signed-off-by: -
Mauro Carvalho Chehab authored
drivers/media/usb/dvb-usb-v2/dvb_usb_core.c: In function ‘dvb_usbv2_adapter_dvb_exit’: drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:531:25: warning: unused variable ‘d’ [-Wunused-variable] struct dvb_usb_device *d = adap_to_d(adap); ^ drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:403:13: warning: ‘dvb_usbv2_media_device_register’ defined but not used [-Wunused-function] static void dvb_usbv2_media_device_register(struct dvb_usb_adapter *adap) drivers/media/usb/dvb-usb/dvb-usb-dvb.c:97:13: warning: ‘dvb_usb_media_device_register’ defined but not used [-Wunused-function] static void dvb_usb_media_device_register(struct dvb_usb_adapter *adap) ^ Signed-off-by: -
Mauro Carvalho Chehab authored
Instead of using media_dev argument for dvb_create_media_graph(), use the adapter. That allows to create a stub for this function, if compiled without DVB support, avoiding to add extra if's at the drivers. Signed-off-by:
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- 26 Feb, 2015 24 commits
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Mauro Carvalho Chehab authored
Instead of assuming just one adapter, change the code to store one media controller per adapter. This works fine for dvb-usb, as, on all drivers here, it is not possible to write a media graph that would mix resources between the two different adapters. Signed-off-by: -
Rafael Lourenço de Lima Chehab authored
Create a struct media_device and add it to the dvb adapter. Please notice that the tuner is not mapped yet by the dvb core. [mchehab@osg.samsung.com: use config option MEDIA_CONTROLLER_DVB] Signed-off-by:
Rafael Lourenço de Lima Chehab <chehabrafael@gmail.com> Signed-off-by:
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Mauro Carvalho Chehab authored
Instead of assuming just one adapter, change the code to store one media controller per adapter. This works fine for dvb-usb, as, on all drivers here, it is not possible to write a media graph that would mix resources between the two different adapters. Acked-by:
Antti Palosaari <crope@iki.fi> Signed-off-by:
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Rafael Lourenço de Lima Chehab authored
Create a struct media_device and add it to the dvb adapter. Please notice that the tuner is not mapped yet by the dvb core. [mchehab@osg.samsung.com: use config option MEDIA_CONTROLLER_DVB due to a rebase] Signed-off-by:
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Mauro Carvalho Chehab authored
We need to initialize the media controller earlier, as the core will call the smsdvb hotplug during register time. Ok, this is an async operation, so, when the module is not loaded, the media controller works. However, if the module is already loaded, nothing will be registered at the media controller, as it will load too late. Signed-off-by: -
Mauro Carvalho Chehab authored
Right now, this is a debug message, misplaced. Promote it to an info message, as it helps to discover if something bad happened during device init. Signed-off-by: -
Mauro Carvalho Chehab authored
All siano modules have a sms_dbg parameter. Now that we're using the standard pr_debug() macro, we can get rid of it. Signed-off-by: -
Mauro Carvalho Chehab authored
On most cases, sms_info() should actually be pr_debug(), but, on other places, it should be pr_info(). Signed-off-by: -
Mauro Carvalho Chehab authored
There's no reason to use a macro here. Just replace everything, and let those debug messages to be activated via dynamic printk. Signed-off-by: -
Mauro Carvalho Chehab authored
Despite its name, those functions are acutally debug prints for the IR part of the driver. So, properly map them using pr_debug() Signed-off-by: -
Mauro Carvalho Chehab authored
Originally, sms_err() would be also displaying the line where the error occurs, but the messages are clear enough. Also, the function is always printed. So, no need for it. Signed-off-by: -
Mauro Carvalho Chehab authored
There's no reason for a sms' own sms_warn macro. Just replace it by the standard pr_warn(). Signed-off-by: -
Mauro Carvalho Chehab authored
Instead of defining its own set of printk functions, let's use the common Kernel debug logic provided by pr_foo functions. As a first step, let's just define the existing macros as the Kernel ones. Signed-off-by: -
Mauro Carvalho Chehab authored
Adding support for the media controller for a pure DVB device is simple: just create a struct media_device and add it to the dvb adapter. After creating all DVB devices, we need to call the DVB core, for it to create the media graph. More work is needed for pure DVB tuners, but this is hidden at the Siano driver, just like several others non-hybrid devices. So, this is streight forward. Signed-off-by: -
Mauro Carvalho Chehab authored
Use an enum to better document the media pads. No functional changes. Suggested-by:
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Mauro Carvalho Chehab authored
There's no need to free state, as it was allocated via devm_kzalloc(). Also, let's return the error code, instead of something else. Reported-by:
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Mauro Carvalho Chehab authored
buf_prepare callback is called for every queued buffer. This is an overkill. Call it at buf_setup, as this should be enough. Acked-by:
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Mauro Carvalho Chehab authored
There are two problems at the comment: - it is badly idented; - its comment doesn't mean anything. Fix it. Requested-by:
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Mauro Carvalho Chehab authored
Analog video inputs are the tuner, plus composite, svideo, etc, e. g. the input pat should actually be like: ___________ TUNER --------> | | | | SVIDEO .......> | cx25840 | | | COMPOSITE1 ...> |_________| (in the above, dashes represent the enabled link, and periods represent the disabled ones) In other words, if we want to properly represent the pipeline, it should be possible to see via the media controller if the tuner is being used as an image source, or if the source is something else. I didn't map those other inputs here yet, due to a few things: - The extra inputs would require subdevs that won't be controlled - I was in doubt about the best way for doing that - That would likely require some extra setup for cx25840 caller drivers, in order to represent what of the possible internal inputs are actually used on each specific board Actually, at least for now, I was unable to see much benefit on adding such map now, so let's just document it, as this could be added later on, as needed. Acked-by: -
Mauro Carvalho Chehab authored
Prefix all DVB media controller entities with "dvb-" and use dash instead of underline at the names. Requested-by:
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Mauro Carvalho Chehab authored
drivers/media/v4l2-core/tuner-core.c:440:7: error: 'struct v4l2_subdev' has no member named 'entity' t->sd.entity.name = t->name; Reported-by: -
Mauro Carvalho Chehab authored
drivers/media/usb/cx231xx/cx231xx-cards.c: In function ‘cx231xx_usb_probe’: drivers/media/usb/cx231xx/cx231xx-cards.c:1589:15: error: ‘struct v4l2_device’ has no member named ‘mdev’ dev->v4l2_dev.mdev = dev->media_dev; ^ drivers/media/usb/cx231xx/cx231xx-cards.c:1589:26: error: ‘struct cx231xx’ has no member named ‘media_dev’ dev->v4l2_dev.mdev = dev->media_dev; ^ scripts/Makefile.build:257: recipe for target 'drivers/media/usb/cx231xx/cx231xx-cards.o' failed Reported-by: -
Mauro Carvalho Chehab authored
if CONFIG_MEDIA_CONTROLLER_DVB is not selected, it is now producing this warning: drivers/media/dvb-core/dvb_frontend.c: In function ‘dvb_frontend_thread’: drivers/media/dvb-core/dvb_frontend.c:695:6: warning: unused variable ‘ret’ [-Wunused-variable] int ret; ^ Reported-by: -
Hans Verkuil authored
The alsa struct in struct media_entity_desc is now marked as deprecated. However, the alsa struct should remain as it is since it cannot be replaced by a simple major/minor device node description. The alsa struct was designed to be used as an alsa card description so V4L2 drivers could use this to expose the alsa card that they create to carry the captured audio. Such a card is not just a PCM device, but also needs to contain the alsa subdevice information, and it may map to multiple devices, e.g. a PCM and a mixer device, such as the au0828 usb stick creates. This is exactly as intended and this cannot and should not be replaced by a simple major/minor. However, whether this information is in the right form for an ALSA device such that it can handle udev renaming rules as well is another matter. So mark this alsa struct as TODO and document the problems involved. Updated the documentation as well to reflect this and to add the 'major' and 'minor' field documentation. Updated the documentation to clearly state that struct dev is to be used for (sub-)devices that create a single device node. Other devices need their own structure here. Signed-off-by:
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- 23 Feb, 2015 2 commits
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Mauro Carvalho Chehab authored
The logic there tries to start the media entity even if it doesn't exist, causing this bug: [ 314.356162] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 [ 314.356202] IP: [<ffffffffa02ef74c>] media_entity_pipeline_start+0x1c/0x390 [media] Reported-by:
Gert-Jan van der Stroom <gjstroom@gmail.com> Signed-off-by:
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Mauro Carvalho Chehab authored
Linux 34.0-rc1 * tag 'v4.0-rc1': (8947 commits) Linux 4.0-rc1 autofs4 copy_dev_ioctl(): keep the value of ->size we'd used for allocation procfs: fix race between symlink removals and traversals debugfs: leave freeing a symlink body until inode eviction Documentation/filesystems/Locking: ->get_sb() is long gone trylock_super(): replacement for grab_super_passive() fanotify: Fix up scripted S_ISDIR/S_ISREG/S_ISLNK conversions Cachefiles: Fix up scripted S_ISDIR/S_ISREG/S_ISLNK conversions VFS: (Scripted) Convert S_ISLNK/DIR/REG(dentry->d_inode) to d_is_*(dentry) SELinux: Use d_is_positive() rather than testing dentry->d_inode Smack: Use d_is_positive() rather than testing dentry->d_inode TOMOYO: Use d_is_dir() rather than d_inode and S_ISDIR() Apparmor: Use d_is_positive/negative() rather than testing dentry->d_inode Apparmor: mediated_filesystem() should use dentry->d_sb not inode->i_sb VFS: Split DCACHE_FILE_TYPE into regular and special types VFS: Add a fallthrough flag for marking virtual dentries VFS: Add a whiteout dentry type VFS: Introduce inode-getting helpers for layered/unioned fs environments kernel: make READ_ONCE() valid on const arguments blk-throttle: check stats_cpu before reading it from sysfs ...
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